As long as you keep your sample in the fridge it will be good up to 5 days. Once you get to room temp from fridge (which takes about an hour) you are good to go to nuke in microwave for ONLY 10 seconds and stash immediately. As long as you keep them temp right, your sample will be fine for about 6-8 hours. I have done it before using frozen urine and it still passed lab tests.
KNOTME66 Reviewed by KNOTME66 on . HELP! pre-emp Labcorp test negative-dilluted RETEST I already started to blaze again! I took a Labcorp pre-employment drug screen on Thursday...I followed the dillution method on this website, I quit for 6 days and I also purchased and used Strip NC for peace of mind (worked for me about 3 years ago)... During the day I drank in addition to Strip NC, about 6 32 oz. Gatorade G2 sport drinks... So I thought I'd pass no problem... test came back negative-diluted but I've been smoking heavy since I took the test 5 days ago!!! HELP!!! Rating: 5